Shuttle-threading device.



H. A. MURPHY da J. P. SIMPSON.

SHUTTLE THREADING DEVICE.

l APPLICATION FILED APR.21, 1911. 1,01 3,425.

Patented J an. 2, 1912.

`INVENTOB5- WITNEQV' @E f'.

UNITED 'STATES PATENT oEEioE.

HARRY AIIIBER'J,` MURPHY AND JOSEPI-IFITZALAN SIMPSON, 0F FULWOOD,PRESTON, ENGLAND.

SHUT'TLE-TI-IREADING- DEVICE.

Specification of Letters Patent.

Patented Jan. 2,1912.

Application filed Apri1 21, 1911. Serial No. 622,460.

To all whom it may concern:

Be it known that we, HARRY ALBERT MURPHY and JosEPH FITZALAN SIMPSON,subjects of the King of England, residing at Fulwood, Preston, in thecounty of Lancaster, England, have invented certain new and. usefulImprovements Connected with Shuttle -Threading Devices, of which thefollowing is a specification.

This invention has reference to the threading of shuttles, that is tosay the passing of the cotton or te-xtile weft or thread from the spoolor cup within the shuttle, through the hole in the body of the shuttlethrough which it has to be passed by means of a eurrent of air createdby air exhaustion effected through artificial means, that is by meansother than by the weaver drawing the thread through his mouth byvplacingit over the said hole and taking in a sharp breath, and so avoiding thedetrimental effect to the health of weavers, and its generalobjectionableness and uncleanliness.

The object of the present invention has been to provide an improvementor improvements in connection with means of the kind referred to, or animproved arrangement and construction of parts which will render theaction of the threading of the shuttle such as will be practical andconvenient (besidesbeing effective), and avoid the drawbacks orobjections hitherto met with.

The invention is illustrated in the accompanying drawings, and ishereinafter described with the aid of them.

Figure 1 of the drawings is a sectional elevation of the apparatus; Fig.2 is an end view; and Fig. 3 is a plan.

Referring now to the drawings, a represents a part of the frame of theloom to which the apparatus is fixed; as for instance, the part of theframe at one side and front of the loom; this part being most convenientfor the manipulation and use of the shuttle by the operator.

ZJ' is the cylinder of the apparatus; and 0 is the piston working in it;the cylinder being formed in one with or connected with a carrier orbracket cl, which is bolted or suitably fastened horizontally, on theupper surface of the part a of the loom.

The position of the cylinder and piston is horizontal; and the stroke ofthe piston is short, and the diameter relatively large, so

that in action, only a short movement of the shuttle and the piston isrequired, to produce a displacement and in-draft of a relatively largevolume of air.

The rubber or iexible mouth which makes joint with the shuttlewhich isshown in dotted lines and marked -is designated e; and it lits in ametal socket f on the outer end of the hollow piston rod g, connectedwith the piston c. The socket f is provided with a plate h below, whichextends out in vfront of it, and serves as a support or rest to theshuttle when being threaded; and in action this plate h slides on theupper surface of the carrier bracket or bed el. Thus,

the shuttle, and the mouth e are relatively stationary, when theapparatus is in action.

The mouth e has ahole through it, and it is provided on each side ofthis hole with a projecting ridge y', which lits into the groove usuallyformed on the side of the shuttle, in line with the threading pot-eye oraperture.

The piston rod g is hollow, and is provided with holes c for the freeescape-of air from the front end of the cylinder, in the return strokeof the piston and on the inner end of the bore of the piston rod, at theback of the piston c, a leather or other valve Z is provided, it beingnormally pressed up to its seat by a very light spring m; and the pistonc itself is normally pressed to a position of rest by the spring a; theouter end of which rests against the cover 0 of the cylinder o. A ringof rub ber or like material p is tted on the back of the mouth socket f,and forms a buffer to the socket and moving parts, when pressed induring the action of threading. The valve Z closes when the piston c ismoved back in the action of threading the shuttle; and the space betweenthe front of the piston, and the closed end of the cylinder, is a closedone at this time; while when it is pressed in the opposite direction bythe spring n, at the back, the air drawn into the cylinder by vthepiston in the threading action can escape by way of this valve as wellas through the open end of the piston rod g 'and mouth 6,' and thereturn action, therefore, of the apparatus can be quickly effected.

Shuttles of the kind indicated in the drawing are of the commonest kind;that is, they have a groove in one side, at one lward, the thread issure to be in the right position to be drawn through.

In action, the shuttle is placed on the plate it, with the groove y atthe end of the shuttle, uppermost, and with the pot-eye over orcoincident with the opening in the mouth e; the projections j of themouth making. a joint or closure on each side of this opening with thesurface of the shuttle Ainthe side groove, and the parts of the rubberabove and below the opening, make joint with the side of the shuttle.Vhen so placed in position, the shuttle is quickly pushed inward, withthe result that the whole movable parts, consisting of the plate h,socket f, and the piston c are moved backward, and an exhaustion iscreated in the front end of the cylinder Z), and the thread lying inthegroove y is carried by the rush of air thereby created through thethreading or pot hole. The stroke provided is only short, and this isconvenient and advantageous in itself; while at the same time, thevolume of air moved and pressed through the poteye, is relatively large.The shuttle is then taken away, and the return action of the piston andmovable parts, by the spring m, as above described, takes place. In caseof shuttles having double eyes it is necessary to close one of the eyesin threading and this may be accomplished by the projection z'.

What is claimed is l. In a shuttle threading apparatus, the combinationof a cylinder V havingits axis horizontal; the piston c working in saidcylinder, the hollow piston rod g on'the piston; a flexible joint makingmouth piece e disposed at one end of said hollow piston rod and havingprojecting ridges which take into the groove in the side of the shuttle;and a spring pressed valve Z at the other end, normally pressed on theopening in said rod end, substantially as set forth.

2. In va shuttle threading apparatus, the combination of a cylinder kbhaving its axis horizontal; the piston c working in said cylinder; thehollow piston rod g; a flexible joint making mouth piece e at one end ofsaid hollow piston rod; a spring pressed -valve Z at the other end,normally pressed on to the opening of said rod end; a slide Zz connectedwith the mouth e and adapted to serve as a rest to the shuttle, and movewith the mout-h; and a platform or bed Z on which the slide moves;substantially as set forth.

3. In a shuttle threading apparatus the combination of a cylinder Z2having its axis horizontal; the piston 0 working in said cylinder; thehollow piston rod g,'.the Hexible joint making mouth piece e at one endof said hollow piston rod, having a ridge at each side of the aperturein the mouthpiece; a valve Z at the other end, normally pressed on theopening of said rod end; holes 7c on the opposite side of the piston tothe valve Z; a spring n adapted to press the piston to the end of thecylinder, and the piston rod out; and a platform for the slide having aflexible ridge thereon; substantiallyas set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

HARRY ALBERT MURPHY. JOSEPH FITZALAN SIMPSON. Vitnesses: SOMERVILLEGooDALL, DONALDSON B. COULTER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

, Washington, D. C.

